If you go into the settings (either Character Config or System Config) you can change the size of every single HUD element in one shot. I believe it's set to 80% as standard, which is fine if you're wearing binoculars.

On my PS3 I have it set to 80%, and on my PS4 I have it set to 120%, and they're both big enough I can see the HUD, but small enough that I don't have a 3cm window to view whats going on.

Although yeah, again, in Settings > HUD, you can resize and reposition every single element individually, if you want a different layout to the standard. I find standard fine, it's just the sizing I changed.